The present invention relates to a liquid dispensing device provided with a passage counter that is a counter moved directly by the passing liquid.

Similar devices are already known having a check cock between supply tank and counter by means of which the flow of liquid has to be interrupted when the desired quantity of stop the counter at the end of a started meas-1 uring unity. Thus for instance, if it is desired to draw of? a quantity of liquid for which the counter marks 360, it will suffice to cause the throttling resistance in the discharge pipe to become operative right after the hand on the dial has left the mark 359. The counter will then be stopped at 360 and will correspond exactly to the delivered quantity of liquid.

Thus the invention consists in means which will stop the counter at the end of a started measuring unity as soon as a throttling device is actuated within the discharge pipe. A preferred embodiment of the invention is described in the following specification and in the drawing where Fig. 1 is a diagram of the whole device embodying the present invention, while Fig. 2 shows a detail and Fig. 2 a cross section on line IIII of the Fig. 2.

The liquid inlet is marked with 1. It is connected to a cylinder 2 which has a slidably arranged piston 3 and which is attached to a passage counter 4. The outlet of thiscounter is shut by an outlet cock 5 unto which is screwed the flexible hose 6 usually employed in liquid fuel stations. The delivery cock is marked with 7. v

A disk 9 is keyed to the axis 8. of the pas- 50 sage counter. This disk possesses a notch 10 340,916, and in Switzerland February 20, 1928.

which may be engaged by the nose-of a snapping arm 12. This arm can be taken along by a catch 13 mounted likewise, like arm 12, loose on the axis 11. This arrangement is made comprehensible in the'plan of Fig. 2 and the sectionalview 2 The mentioned movement of the catch 13 will take place each time when the plug 15 of the outlet cock 5 is lifted up by means of the handle 14 contrary to the etfect of spring 16. The plug will move in a straight line. It carries at its top a head 17 which when handle 14 is pressed down will push the catch 13 aside and let it snap'in at its underside.

The snap arm 12 is held in the position of the Fig. 1 by a-second catch 18 which is under .the effect of a spring 19 and which can be moved by the piston rod 20'of the piston 3 contrary to the efi'ect of said spring. The discharge cock 7 can be shut by hand either totally or' partly by pressing the valve stem 21. It serves by the way also. for inserting a resistance into the discharge conduit when the continuouscounter has to be arrested.

The device operates as follows:

In the position of rest of the device the outlet cock 5 is shut and the handle arm 14 has assumed its highest throw.. The catch 13 is disengaged from the head 17 and the hook 22 of the snap arm 12 has dropped into the notch 10. The piston 3 has the position shown in Fig. 1 because there is not yet any pressure in the inlet conduit. Now if the outlet cock 5 is opened by means of handle 14 the head 17 will "have risen to the height of catch 13 and whena pressure in the conduit l is produced by starting a supply pump the counter will move and thedisk 9 be rotated in an anti-clockwise sense so that hook o 22 will move on the circular part of its circumference whereby catch 13 is swung into engagement with head 17 and catch 18 will be enabled to engage the hook 22 so as to keep the arm 12 out of engagement with the notch of the revolving disk 9. This is the position of Fig. 1, in which any desired quantity of liquid can be drawn 011 from the counter. Now if it is desired to stop the delivery exactly at the end of a measuring unity while this unity has been already started, a result which will be obtained when the outlet cock 1 5 closes simultaneously with the dropping of hook 522 into the notch of the disk 9, the attendant has to bear only from time to time on the valve 21 of the dischar e cock; Then a stowingoof the liquid will ta e place which will be It so far back as piston 3. This stowing will move the piston 3 upwards'so as to throw catch 18 out of engagement with hook 22 and to release snap arm 12. Now hook 22 will glide freely over the circular circumference of the disk 9, until it drops into the notch 10 and, stops the counter. The arm 12- swinging in a clockwise sense will throw catch 13 out of engagement with head 17 and plug 5 ofthe outlet cock will be shut under theeffect of spring 16. The delivery of liquid being stopped the supply pump may be stopped also by means not shown. Thus each supply of liquid will have been arrested exactly'when the desired quantity has been delivered.

hat I claim iss 1. In a liquid dispensing device and'in combination a discharge conduit, a passagecounter inserted into this conduit and assov ciated means whereby the counter can only be stopped at the zero position of a measuring unity, a piston check valve right after said counter, throttling fneans at the delivery end of said conduit and means operatively connected with said check valve and adapted to engage with said stopping means of the counter whenever said throttling means are made operative. 3. In a liquid dispensing device and in combination, a discharge conduit, a passagecounter inserted intg this conduit, and provided with a notched disk keyed to its axls as means for marking the zero position of a measuring unity, a piston check valve right after said counter, a head provided at the top end of the piston of said valve, a pivoted and spring-controlled snap arm having a hook capable of engaging said notch, a spring controlled catch controlled by said sna arm, and a hook provided thereon capable o engaglng said head in the open position of the checkvalve, a pivoted handle adapted to lift up the piston of the check valve by hand, and means adapted to maintain the inoperative position of said snap arm anddepending on the pressure in the discharge conduit.

4. In a liquid dispensing device and combination a discharge condu1t, a passage-counter inserted into this conduit and provided with a notched disk keyed to its axis as means for marking the zero position of a measurin unity, a piston check-valve right after sai counter, a head provided at the top end of the piston of said valve, a pivoted and spring-controlled snap arm having a hook capable of engaging said notch, a spring controlled catch controlled by said snap arm, and a hook provided thereon capable of engaging said headin the open position of the check-valve, a pivoted handle adapted to lift up the piston of the check-valve by hand, and means for maintaining the inoperative position of said snap arm comprising, a branch neck inserted into the discharge conduit right before the counter and a piston fitted therein projecting with a pin to the outside, and a spring-controlled two armed catch bearing with one arm on said pin and capable of engaging with its other hooked arm said snap arm,